{
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\begin{longtable}{l*{4}{c}}
\caption{Effect of New Deal and Agricultural Support on Women Volunteer per Capita.\label{tab:women-volunteers}}\\
\hline\hline\endfirsthead\hline\endhead\hline\endfoot\endlastfoot
                &\multicolumn{4}{c}{Women volunteers}                                       \\\cmidrule(lr){2-5}
                &\multicolumn{1}{c}{(1)}         &\multicolumn{1}{c}{(2)}         &\multicolumn{1}{c}{(3)}         &\multicolumn{1}{c}{(4)}         \\
                &      OLS         &      OLS         &       RF         &     2SLS         \\
\hline
New Deal grants &    0.004         &                  &                  &                  \\
                &  [0.002]         &                  &                  &                  \\
Agricultural support&                  &    0.001         &                  &    0.009\sym{***}\\
                &                  &  [0.001]         &                  &  [0.003]         \\
Months of drought: 1933-40&                  &                  &    0.003\sym{**} &                  \\
                &                  &                  &  [0.001]         &                  \\
Tenure agri committee: 1933-35&                  &                  &    0.002         &                  \\
                &                  &                  &  [0.001]         &                  \\
County-level controls &      Yes         &      Yes         &      Yes         &      Yes         \\
State FEs       &      Yes         &      Yes         &      Yes         &      Yes         \\
\hline
\(R^{2}\)       &    0.529         &    0.528         &    0.529         &    0.507         \\
Mean dependent variable&    0.056         &    0.056         &    0.056         &    0.056         \\
Observations    &     2329         &     2329         &     2329         &     2329         \\
\hline\hline
\end{longtable}
}
